Was Meraj of the Prophet (s.a.w.a.) physical or spiritual?

Allamah Amini (r.a.) documents:

‘The correctness of the report of Meraj is only in the bodily nature of the journey. There are numerous consecutively transmitted reports to this effect and it is from the necessary beliefs of religion. Else if we deny the bodily nature of Meraj, there is a question mark even on the correctness of the incident of Asif Ibn Barkhiyya (a.s.) in the Noble Quran.  If it is possible for Ifreet from the jinn to summon the throne of Bilkees before Sulaiman (a.s.) could rise from his place…, then it is even more appropriate for Allah to grant nobility to His proximate one by granting him power on things that He has not granted others…’

Al-Ghadeer v 5 p 30